81 lines
2.2 KiB
C++
81 lines
2.2 KiB
C++
/* STM32F103C8 Black Pill ( PB12)
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Serialport set and display RTC clock , Write by CSNOL https://github.com/csnol/STM32-Examples
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based on https://github.com/rogerclarkmelbourne/Arduino_STM32
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1. Blink on PB12 per 1s.
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2. change to your timezone in the sketch; .
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3. get Unix epoch time from https://www.epochconverter.com/ ;
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4. last step input the 10 bits number( example: 1503945555) to Serialport ;
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5. the clock will be reset to you wanted.
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## Why the 10 bits Unix epoch time be used?
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****Because I wanna connect to NTP server by ESP-8266.
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****in the <NTPClient.h> library. getNtpTime() will return this 10 bits Unix epoch time.
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*/
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#include <RTClock.h>
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RTClock rtclock (RTCSEL_LSE); // initialise
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time_t tt;
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tm_t mtt = { 47, 8, 27, 0, 1, 20, 30, 30 };
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char weekday1[][7] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}; // 0,1,2,3,4,5,6
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uint8_t timeread[11];
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int timezone = 8 * 3600; // timezone -8 + DST +1 = -7 CA USA
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time_t tt1;
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#define LED_PIN PB12
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// This function is called in the attachSecondsInterrpt
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void blink ()
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{
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digitalWrite(LED_PIN, !digitalRead(LED_PIN));
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tt++;
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}
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void setup()
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{
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Serial.begin(115200);
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pinMode(LED_PIN, OUTPUT);
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tt = rtclock.makeTime(mtt);
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tt1 = tt;
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rtclock.attachSecondsInterrupt(blink);// Call blink
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}
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int i = 0;
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void loop()
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{
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while (Serial.available())
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{ timeread[i] = Serial.read();
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if (i < 11) {
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i++;
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}
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else {
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i = 0;
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tt = (timeread[0] - '0') * 1000000000 + (timeread[1] - '0') * 100000000 + (timeread[2] - '0') * 10000000 + (timeread[3] - '0') * 1000000 + (timeread[4] - '0') * 100000;
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tt += (timeread[5] - '0') * 10000 + (timeread[6] - '0') * 1000 + (timeread[7] - '0') * 100 + (timeread[8] - '0') * 10 + (timeread[9] - '0') + timezone;
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}
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}
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if (tt1 != tt)
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{
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tt1 = tt;
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rtclock.breakTime(tt, mtt);
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Serial.print("Date: ");
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Serial.print(mtt.day);
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Serial.print("- ");
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Serial.print(mtt.month);
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Serial.print(" ");
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Serial.print(mtt.year + 1970);
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Serial.print(" ");
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Serial.print(weekday1[mtt.weekday]);
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Serial.print(" Time: ");
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Serial.print(mtt.hour);
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Serial.print(" : ");
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Serial.print(mtt.minute);
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Serial.print(" : ");
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Serial.println(mtt.second);
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}
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}
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